| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Matthew T(dot) O'Connor" <matthew(at)zeut(dot)net> |
| Cc: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Manfred Koizar <mkoi-pg(at)aon(dot)at>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: nested transactions |
| Date: | 2002-11-29 16:01:09 |
| Message-ID: | 22653.1038585669@sss.pgh.pa.us |
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"Matthew T. O'Connor" <matthew(at)zeut(dot)net> writes:
> Right now AVD only performs vacuum analyze on specific tables as it deems they
> need it, it does not perform vacuum on entire databases at any point yet.
See
http://www.ca.postgresql.org/users-lounge/docs/7.2/postgres/routine-vacuuming.html
However I think that only talks about XID wraparound and datfrozenxid.
pg_clog recycling is driven off the oldest datvacuumxid in pg_database;
the AVD should think about launching a database-wide vacuum whenever
age(datvacuumxid) exceeds a million or two.
regards, tom lane
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